Dial-cam-controlling mechanism



Nov. 6, 1928. 1, 90,593

N. J. PERRY DIAL CAM CONTROLLING MECHANISM Original Filed Sept. 13, 19203 Sheets-Sheet .1

gum/whoa Napoleonl Perry Nov. 6, 1928. 1,690,593

' N.J.PERRY DIAL CAM CONTROLLING MECHANISM Original Filed Sept. 13. 19205 s 5 y 2 Nov. 6, 1928. 1,690,593

N. J. PERRY DIAL CAM CONTROLLING MECHANISM Original Filed Sapt. 15. 192s Sheets-Sheet 5 anmwtoz Napoleon J. Perry Patented Nov. 6, 1928.

sums PA-r sm other;

NAPOLEON J. enny, OF NASl-IVILLE, TENNESSEE; AssIern'oR To MA HOSIERYMILLS,

on NASHVILLE, TENNESSEE, A coRPoRATIofi or mim'sssm DiAL-GAM-CONTROLLINGMECHANISM.

Applie'ation filed s'e'pmmber 1a; 1920, Serial 1%. 409,983. sensed March23, ms.

The purpose of my said intention is to provide an iniprovenient in d alcan] controlling means desgned especially for use in circular knittingmachines adapted to knit su'cee'ssive portions of plain Work (either byeireuliti or reciprocating motion) and rib Work in -pre'dei'er1ninedrel'et'on thereto, as

for exiiinple 2t stoel'cin'g With 2t plain foot and ribbed leg. WVhilethis deviee particularly adapted ioi' use in a knitting machine havlng astationary needle cylinder and a rotary eini'i ring, it is not limitedthereto, eertein features being adapted to n'ieehines having astationary Cami ring and rotary needle eylin'deig "as well as toknitting lna'ehines oi oth'r types, and to other patterncontrolled niiclii'nery.

Reference is had to my co-pending application No. 3 5,071, filedDecember 29; 1919, for "details of structure not herein disclosed.

Referring to the accompanying drawings which are made a part hereof andon which similar reference characters indicate similar pin-is, Y I

Figure 1 shows a detail elevation taken at oii'esicl'e'of themaehine, iI t Figure 2 ii plan View of the machine, parts not necessary to thisd'selos'ure being o1nit-' ted, i

Figiire's 3 and'i are (let-1111s, Figure 5 a view s howing the underside of my positioning Cains, Figure 6 :1 seetion of the dam in Figure5, and .1

*ir'g'ure 7 View showing the under 'slde of the d al chin-plate.

The Cain shaft 25 is driven by pawls 'engaging riitchets 2'6 and 27 fastthereon, and has also test thereon ii motion ehenging min 28 hid itpattern drum 29 for controlling the arn feeds and other devices; Looseon the shaft 2i hub 3'0 bearing a ratchet 31 by i'vhi'eh it is drivenfrom (I novinjq pnrt ofthe iiiiichine, and iispro'eket Wheel on which isit cli'e-in These parts are or may be all as in the patent to lilayo,7526;178, and 0p} eiite thes'aine manner or 'other pattern forms nizi-ybe substituted for the sprocket ehsiin', if preferred. H l i To adeptthis meeheni m 01; centre-11m else the cam in dial cam plate, I haveadded the following parts, as assented;

The chain has sidewisle extensions 3451i eertainlinks which are ediiptedto engage a downward extension 35 "on a lever 36 pivoted at 37 to afined pert'of the machine. A vertieel rod 38 rests. it its loiver end onlever 36 and carries at its upper end a' plate 39 to which it is rigidlyci'mn'eete'd. A rod 40 is also lined to the plate and both rods are Asegmental reel: member :42 is fixed to rod 40 above plate 39 and isadapted to operate pinion 4:3, This pinion is mounted on 'a'shaft i4having'zt crank-pin 45 for moving two pewis 46 and 4:7. Pawl 47 ispivoted by screw 4:8 to an arni i9 on a post 50 on therota'tin-g head 51of the machine. Pawl it? drives retehet52 and pawl 47 ms toi'ock itafter each movement pyip'awl 46. The number of teeth in rack segment 42and pinion 43 is so proportioned that shaft 44 will make a completerevolution each time it is engaged by rack 42. Riitohet has 24 teeth andis formed on it positioning cam 53 mounted upon the dial cam plate orsupport 54: on the under side of which is ii pivoted "loek cerrying aneedle-projecting cam 55. The positioning eaini' is capable of rotationrelative to the plate 54 to moveuie earn 55 to desired positions by theaction of cam path on apin 57, projecting f'i olii the block, itsknitting position; Where the needles are fully projected ind fullyretracted during a relative rotation of the needles and their cams;tucking position where the needles are projected fer enough to take theyarn; but not to clear their-latches to knit, and welting position Wherethey r'ei'nain sue stztnti'elly in non-lniitting' position an may hehereof yiirn or may hold loops of arn fora desired period; It :ilsoiiiov'es :i pivoted bloele'earrying eiini 58 bV the eel-ion of Gainlmili 59 on 'piii 6'0 to "a position when it eliirs th'e liitehes of theneedles endto an inner idle position t'o ozist off the loops.Needleretracting ean is and giiiirdCeniS are iilso e51- l'lB'Cl by thebloeks, as in my pii'eiapplies tio'n alibv'e' mentioned; p p T: p

s a niiieiiiiie siie'h as thit at niy a piimti'oh No; 348",07 l;tl'1epositioning am of ignie 5 would produce efii'e eits as follows on thedial needles 24 in its sehedriled positions of may T-ju stiiien'ts,positions pins pioje 'eting npiinirdl yfrh'm the diet eaiiis' intogrooves 56 zind59 btiiig indibiited by the numbered lines in Figure 5,the opera Position 01 Number Cam Effect on knitting Plain work oncylinder.

Dial-needles take yarn.

Hold bights of yarn.

Hold bights of yarn. I

Change from plain to rib completed. Needles take yarn from round welt,Dial d1needle: t holdI bigitS-cyhndeg T nee es kni oma re or inary rounVS citing." Welt Knitting Round Welt completed. I Repeat operations 5 to8 for second round welt. 7 Repeat operations 5 to 8 for third roundwelt. Repeat operations 5 to 8-for fourth round welt. Tucking" Changefrom rib to plain.

Weltin'g Change from rib to plain.

\Velting Plain work on cylinder..

Welting Tucking. Waiting Welting Knitting. 'Iuckinglit will beunderstood that the leg of the.

stocking is ,knitatposition 4,and that the round welts referred to aremerely for orna nienting theupper end oi the stocking, they beingknitted as ordinary welts,.fand the stockings being knitted as endlessstring work. Also that inchanging from plain to rib, at positions 2 and3 two or more rounds are knit on the cylinder needles while the dial'needleshold bights of yarn taken at position 1. I

, W henposition'22is reached for the knitting cam, the work casting camisrat position 11 jllStfibOlltto advance the needles, which haveceasedto take yarn at 22; at

position 23 of cam 55, cam 58 is at position 12 to clear the latches,and when cam 55 is at 24, cam 58 is at 13 and the dial needles cast ofl"their stitches, Iwhile the cylinder needles continue to knit thuscompleting the, cycle. It is to be understood that the positionsindicated by circles in Figure 5, are really those of the upwardlyprojecting lugs on the camsand not of the cams themselves, this beingthe reason why 23 and 12, e. g., are not at diametrically opposedpoints;

Such description of the operation of cam V 53 is merely illustrative andits operation maybe widely varied by using differentp0- sitioning camsand by changing the pattern mechanism. i ,An advantage of this device isthat by the use of the positioning cam shown having twenty-fourpositions instead of eighteen as inmy former application, I am enabledto dispensewith one rack-segment and the ens tire series ofdevicesnecessary to lift the rack-segment, to high position. It will benoted that application 348,071 has two series oflugs on the pattern formfor raising its segment-racks; to different heights,

while the present drive employs .but one set 'i' of lugs on-the chain,yet is able to knit plain and ribbed fabric with roll welts in theribbed, fabric.

-Another advantage is that the angles of the outer cam path are easier,thus faQilitatingithe running of the machine.

pensed with, the single rack being operated by lugs of uniform height onthe pattern drum. j p 7 I have shown one 'form of my invention but;wishit to be distinctly understood that I ,1 do not limit myselfto theparticular embodirnent shown or the particular utility de scribed, thetrue scope of the invention being set forth in the appended claims.

laying thus fully described my said invention, what I claim as new anddesire to secure by Letters Patent, is: I I j 1. In adial and cylinder'knitting machine a dial cam support, needle, operating cams on the same,pins on the cams, a positioning cam for the needle cams,the positioningcam having grooves therein for engaging said pinson the needle cams andmeans for indicating twenty-four successive positions of theneedle-cams, substantially as set forth.

2., In a knitting machine adapted to produce either, ribbed, plaincircular or reciprocating work as desired, a dial cam support,needlelcams thereon, a rotary positioning cam. on the support to adjustthe needle cams, a ratchet on'the cam having twentyand means foroperating the them relatively into and out ot engaging position.

4. In a knitting machine adapted to produce-either'ribbed, plaincircular or reciproeating work asdesired, a dial cam support,

a rotary positioning cam on the support, means to rotate the cam in acycle of twenty four steps, a single pinion rotatable with the dial cap,a single rack adapted to engage the pinion, a pattern chainand-connections therefrom tomove the rack into and out of operativerelation to the pinion.

- ,5. In a knitting machine adapted to produce either ribbed, plaincircular or reciprocating work as desired, adial cam support, a

rotary positioning cam on the support, and

means torotate the cam in a cycle of twenty our steps, a single pinionrotatable with the dial cap, a single rack adapted to engage the pinion,a pattern mechanism tocontrol the. operations of the machine, includinga pattern chain and connections therefromto move, the rack into and 011of operative relation tothe p ni n.

6. In a knitting machine adapted to produce either ribbed, plain.circular or reciprocating Work as desired, a dial cam support, a maincam shaft, a sprocket Wheel loose thereon, a chain on the Wheel, lugsprojecting laterally from the chain, a pinion on the rotating head ofthe machine for positioning the dial cams, a rack adjacent thereto, andmeans actuated from the chain for mov ing the rack into and out ofoperative relation to the pinion.

7. In a pat-tern mechanism the combination of a chain having lugsprojecting later; ally therefrom, a lever adapted to engage the lugs, anupright rod movable with the lever, a rack on the rod for engagementwith a pinion on the knitting head, a bracket for guiding the upper endof the rod and a second rod fixed to the first and also guided by thebracket, the rack being movable by the lugs on the chain into and out ofoperative relation to the pinion.

8. In a pattern mechanism, a main cam shaft, a pattern form supportedthereby said form having a single series of projec tions at one side, alever adapted to rest at one end on the projections, a rod connected tothe lever, a segment rack on the rod, a positioning cam for the dialcams, said positioning cam carrying a ratchet, a shaft having astarn-vheel for engagement with the segment rack and an eccentric pawlfor oper ating the ratchet.

9. In a knitting machine having rotary needle actuating cams, asprocket, means to drive the same, a chain on the sprocket, lugsprojecting perpendicularly to the path of movement of the chain, lugsprojecting laterally from the chain, a pivoted lever arranged to bemoved by'the lugs, a device movable about the axis of the machine, andan abutment adjusted to be moved by said lever into the path of saiddevice for variously positioning one of said-needle actuating cams,substantially as set forth.

10. In a dial and cylinder knitting machine, a positioning cam above thedial connected to the dial cams to adjust them and thereby vary theaction of the needles, a

pinion on the rotary head of the machine,

connections from the pinion for operating the positioning cam, a singlerack to operate the pinion, a pattern form having a single series ofelevations of uniform height and connections adapted to be lifted by theform to place the rack in operative position, substantially as setforth.

11. In a dial and cylinder knitting machine, a rotary head, a pinionthereon connected to a dial cam for adjusting it, a single rack on astationary part of the machine for driving the pinion, and patternmechanism for moving said rack into and out of driving position,substantially as set forth.

12. In a dial and cylinder knitting ma chine, a rotary head, a pinionthereon connected to a dial cam for adjusting it, a rack fordriving thepinion, a pattern form having a single series of elevations of uniformheight, and connections from the form to the rack, substantially as setforth.

In witness whereof, I have hereunto set my hand at Nashville, Tennessee,this 9th day of September, A. D. nineteen hundred and twenty.

NAPOLEON J. PERRY.

